Plant Problems!! Fan leaves dying off-pics!

I don't know what the problem is. The leaves are dying but not in a traditional get yellow and die fashion. The plant was repotted from a 4 to 5 gallon pot a few days ago and a few of the roots may have been lost but can that cause this? Basically it starts out as little spots and it's like the places are drying up because on the under side of the leaf the spots look more transparent. The humidity is around 60% and their is no sign of bugs/mites. I am sparingly adding a nute solution to the waterings with an n-p-k ration of 7-9-5... let me know what you think.
http://i101.photobucket.com/albums/m...01015-1103.jpg
http://i101.photobucket.com/albums/m...01015-1104.jpg
http://i101.photobucket.com/albums/m...01015-1102.jpg

Nobody can identify with those pictures? It's under a 400w hps in a grow tent with proper humidity and temps. The soil ph meter reads 6.5 but i'm not sure how accurate it is.

have u looked into a fungus type of infestation?

what type of fungus? I've searched fungus but haven't found pics that resemble mine. Plus the leaves feel dry, im not sure if that's fungus like. But I'm open to suggestions